drivers/media/platform/ti/davinci/vpif_capture.h

Source file repositories/reference/linux-study-clean/drivers/media/platform/ti/davinci/vpif_capture.h

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/ti/davinci/vpif_capture.h
Extension
.h
Size
2905 bytes
Lines
108
Domain
Driver Families
Bucket
drivers/media
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct video_obj {
	enum v4l2_field buf_field;
	/* Currently selected or default standard */
	v4l2_std_id stdid;
	struct v4l2_dv_timings dv_timings;
};

struct vpif_cap_buffer {
	struct vb2_v4l2_buffer vb;
	struct list_head list;
};

struct common_obj {
	/* Pointer pointing to current v4l2_buffer */
	struct vpif_cap_buffer *cur_frm;
	/* Pointer pointing to current v4l2_buffer */
	struct vpif_cap_buffer *next_frm;
	/* Used to store pixel format */
	struct v4l2_format fmt;
	/* Buffer queue used in vb2 */
	struct vb2_queue buffer_queue;
	/* Queue of filled frames */
	struct list_head dma_queue;
	/* Protects the dma_queue field */
	spinlock_t irqlock;
	/* lock used to access this structure */
	struct mutex lock;
	/* Function pointer to set the addresses */
	void (*set_addr) (unsigned long, unsigned long, unsigned long,
			  unsigned long);
	/* offset where Y top starts from the starting of the buffer */
	u32 ytop_off;
	/* offset where Y bottom starts from the starting of the buffer */
	u32 ybtm_off;
	/* offset where C top starts from the starting of the buffer */
	u32 ctop_off;
	/* offset where C bottom starts from the starting of the buffer */
	u32 cbtm_off;
	/* Indicates width of the image data */
	u32 width;
	/* Indicates height of the image data */
	u32 height;
};

struct channel_obj {
	/* Identifies video device for this channel */
	struct video_device video_dev;
	/* Indicates id of the field which is being displayed */
	u32 field_id;
	/* flag to indicate whether decoder is initialized */
	u8 initialized;
	/* Identifies channel */
	enum vpif_channel_id channel_id;
	/* Current input */
	u32 input_idx;
	/* subdev corresponding to the current input, may be NULL */
	struct v4l2_subdev *sd;
	/* vpif configuration params */
	struct vpif_params vpifparams;
	/* common object array */
	struct common_obj common[VPIF_NUMBER_OF_OBJECTS];
	/* video object */
	struct video_obj video;
};

struct vpif_device {
	struct v4l2_device v4l2_dev;
	struct channel_obj *dev[VPIF_CAPTURE_NUM_CHANNELS];
	struct v4l2_subdev **sd;
	struct v4l2_async_notifier notifier;
	struct vpif_capture_config *config;
};

#endif				/* VPIF_CAPTURE_H */

Annotation

Implementation Notes